Code maintenance for Qt 5:

- Added usage of QUrlQuery
- Removed QSound::isAvailable()
- Changed Qt::escape() to QString::toHtmlEscaped()
- Changed QAbstractItemModel::setSupportedDragActions() to virtual QAbstractItemModel::supportedDragActions()

git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@6851 b45a01b8-16f6-495d-af2f-9b41ad6348cc

retroshare-gui/src/gui/SoundManager.cpp

@@ -115,7 +115,13 @@ void SoundManager::setEventFilename(const QString &event, const QString &filenam
 
 void SoundManager::play(const QString &event)
 {
-	if (isMute() || !QSound::isAvailable() || !eventEnabled(event)) {
+#if QT_VERSION < QT_VERSION_CHECK (5, 0, 0)
+	if (!QSound::isAvailable()) {
+		return;
+	}
+#endif
+
+	if (isMute() || !eventEnabled(event)) {
 		return;
 	}